Liquid-mixer.



M. L. TOBRINBR. LIQUID MIXER.

APPLICATION FILED APR. 23, 1912. 1 969 91 2 Patented Aug". 12, 1913.

ATTORNEY III 4 MARION L. TOBRINER, OF SAN FRANCISCO, CALIFORNIA.

LIQUID-MIXER.

Specification of Letters Patent.

Patented Aug. 12,1913.

Application filed April 23, 1912. Serial No. 692,703.

T 0 all whom it may concern:

Be it known that I, MARION L. TOBRINER, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Liquid- Mixers, of which the following is a specification.

The present invention relates to means for conveniently mixing or diluting liquids, powders, and other substances with water, or other liquids or gases.

One main object of the invention is to provide a mixer or diluter adapted to be used in conjunction with dental cuspidors for conveniently mixing mouth washes for pa tients.

During most dental operations it is frequently necessary for the patient to wash out his mouth at very frequent intervals in order to remove the saliva,blood, and other substances occasioned by the operation or to flush the parts with stimulating or antiseptic liquid, or other wash. It is desirable to use for this purpose water to which has been added medicated liquid or powder. To do this it has heretofore been required that the dentist should prepare this mouth wash by mixing in a drinking glass, water and the medicine from a bottle or other container. To do so, however, consumes a very considerable proportion of the whole time of the operation, especially if the dentist is at all careful in obtaining the right proportions, because the preparation of the mouth wash requires to be done so many times during the performance of the operation. One object of the present invention, therefore, is to provide a device by which this mouth wash can be prepared almost as quickly as a wash of plain water.

In the accompanying drawing, Figure 1 is a side view of one form of my improved device shown as applied to a dental cuspidor, certain parts being shown in vertical section; Figs. 2, 3 and 4 are sectional views of the valve in various positions.

Referring to the drawing, 1 indicates a dental cuspidor having a supply pipe 2 controlled by a valve 3, and adapted to discharge by a delivery pipe 4 into a drinking glass 5 supported upon a tray or bracket 6 supported on the delivery pipe 4.

In my invention there is connected to the valve casing 7 the upper end of a tube 8, the lower end of which is connected with a bottle or vessel 9 containing a drug or medi cine, and supported in any convenient manner, as by a hanger 11, upon the pipe 2 of the cuspidor. There is also connected to said valve casing, at a point about onequarter of a revolution from the connection with the tube 8, one end of a drain pipe 12 which discharges into the cuspidor 1.

The valve 3 is a rotary tapering valve and is formed with a diametrically extending conduit 13, which flares slightly from one end to the other. When the dentist desires to prepare a mouth wash composed of a mixture of water and medicine he turns the valve into the position shown in Fig. 3, in which the conduit 13 is vertical and flares upward. In that position the outer end of a conduit 14 in the valve, the inner end of which communicates with the conduit 13, and which extends obliquely therefrom, registers with the opening in the valve casing connected with the medicine supply tube 8. The water flowing out through the nozzle creates a suction at the end of the conduit 14 opening into the conduit 13, which draws up liquid from the bottle or other vessel containing the medicine. When a sufiicient supply of the mixture has been obtained, the dentist turns the valve into the position shown in Fig. 4 in which position the conduit 13 is cut off from the supply pipe 2, but the conduit 14 communicates with the drain pipe 12, and the conduit 13 communicates by a branch conduit 16 with the delivery tube 4, so that the residual mixture remaining in said tube 4 can drain into the bowl of the cuspidor by the conduits 16, 13 and 14 and the drain pipe 12. When the dentist wishes to obtain plain water from the supply pipe 2, he turns the valve into the position indicated in Fig. 2 in which position the delivery pipe 4 is in communication with the pipe 2 by means of the conduit 13. The outer end of the conduit 16 is made flaring, so that when the valve is slightly turned in a left-handed direction from the position shown in Fig. 3, a small amount of air is drawn up through the drain pipe 12 serving to aerate the water.

I claim 1. In combination with a bowl and a support therefor, means for supporting a supply of liquid thereon, a water conduit adapted to be connected with a source of supply of water under pressure and having a contracted portion followed by an expanded portion, a conduit for conducting a liquid from said source of supply into the expanded portion of said water conduit, and means for controlling said conduits.

5 2. In combination with a bowl and a support therefor, a receptacle for liquid, a water conduit adapted to be connected with a source of supply of water under pressure and having therein a contracted portion followed by an expanded portion, a conduit for conducting a liquid from said receptacle into the expanded portion of said water conduit, a drain conduit arranged to drain into said bowl residual liquid from said first-named conduit, and means for controlling said con-- duits.

3. In combination with a bowl and a support therefor, a receptacle for liquid, a

water conduit adapted to be connected with a source of supply of water under pressure and having a contracted portion followed by an expanded portion, a conduit for conducting a liquid from said receptacle into the expanded portion of said conduit and a drain conduit connected with said firstnamed conduit and open to the atmosphere at the bottom, and means for controlling said conduits.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

MARION L. TOBRINER.

lVitnesses:

FRANCIS M. WRIGHT, N. B. KEATING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

